This article represents an update ato a previous review of databases published here in 1997 . Since that time a number of significant changes have evolved, including a much-expanded new edition of the NIST 'Atomic Spectra Database'. The basic electronic catalogue of atomic and plasma databases remains that of Y. Ralchenko et al. At the Weizmann Institute, Israel. Http://plasma-gate.weizmann.ac.il/DBfAPP.html. The databases described below represent a small subset of the 35 databases listed threr with hyper-links. We limit our selection to those where a significant update occurred during the least 2 years (or will occur in the very near future) and to those which are of particular interest to spectrochemists and convenient to use. We group these into three categories of spectroscopic databases: general, specialized, and bibliographic. Additional NIST databases of interest, including electron-impact ionization cross-sections, can be accessed via http://physics.nist.gov/Phys-RefData
. Three of these are highlighted below.